Flask strap



Jan. Z9 1924,

J. H. MAYWORM FLASK STRAP Patented Jan. 29, 1924.

UNITED STATES LP atente ATENT orties,

JOHN E; ivraYwoEM, or MILWAUKEE, wisconsin, Assreivon To ifi/'Ens STEELcori- PANY, or WEST Arms,- wrsoonsrn. i v

ELASK STRAP.

appiieation mela May 3,

To all whom t may concern:

Be it known that I, JOHN H. `MAYWORM, a citizen of the United States,and resident of Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements in FlaskStraps; and l do hereby ydeclare that the following is a full, clear,and exact description thereof.

The invention relates to improvements in liask straps, and moreparticularly to a type of the same adapted for use in connection withcope flasks or molds.

It is the present practice to make use of transversely extending woodenstraps or bars for the purpose of anchoring or supporting core inposition with a liask mold, and these straps have to be renewed witheach pouring of the material to be molded, inasmuch as they are burntout or otherwise destroyed in each molding operation, and, consequently,are a source of continued annoyance throughout successive moldingoperations, causing an undue and otherwise unnecessary expenditure oftime and money in such operations.

The principal object of the invention is therefore to provide for animproved strap construction of the class mentioned, and one of acomparatively long life, whereby to be used for indeiinite periodsthroughout successive molding operations, and, c0nsequently e'ect amarked saving in the cost of such operations, as well as a correspondingsaving in the time required for the accomplishment of each of suchoperations.

Another and equally important object of the invention is to provide fora flask strap of the type specified, and one of a nature to beadjustable for use on molds or flasks of various sizes, and at anydesired or necessary angle with respect thereto, such as is not possiblein the use of the wooden straps as aforesaid by reason of the fact thatthe ylatter straps must be made in varying` lengths, one lengthcorrespondingly for each particular sized mold or iask used.

A further and important object of the invention is to provide for aflask strap of the character set forth, and one capable of being readilyand easily removed from position, or loosened from such position, forthe easy shaking out of the sand content of the mold or flask, such ascannot now be readily accomplished by reason of the wood- 1921.v serialNo. 466,576. p y

With the foregoingandother objects in View, the invention resides in thecertain novel and useful construction and arrangement `of parts as willbe hereinafter more fully described, set forth in the appended claim,and illustrated in they accompanying drawing, in which Figure 1 is a topplan view of a mold or flask showing several of the preferredeinbodiments of the invention as applied thereto, and

Figure 2 is a vertical transverse section taken on the line 2-2 ofFigure 1.

Referring to the drawing, the numerals 10 and l1 indicate the oppositevside walls of a conventional form of mold box or ask upon the top edgesof which are adapted to be positioned and secured the transverselyextending flask straps from which the core is to be supported inposition.

The improved flask straps, as shown, comprise a long metal bar 12 havingan inverted substantially U-shaped outer end portion 13 adapted to beengaged over the top edge of one of the vertical sidewalls, the sidewall l0 in the present instance, and having a pair of s aced projectionsor'circular lugs 14 dispose laterally inward from its inner end, and ashorter metal bar 15 having its inner end disposed in overlappingrelation with respect to the inner end of the longer bar 12 and providedwith a series of spaced circular openings 16 adapted to beselectivelyengaged by the projections or lugs 14 of the latter bar 12.The outer end of the shorter bar 15 is also provided with an invertedsubstantially U-shaped portion 17 adapted for engagement over the topedge of the other of the vertical side walls, the side Wall 11, of themold box or flask.

The straps thusl formed are adjustedto a proper length corresponding ytothe width of the mold box or flask so that the inner of the legs of theinverted U-shaped poi'- tions 13 and 17 lie in close proximity to theopposed faces of the complemental side walls 10 and l1, when suitablewedge memill bers 18 and 19, respectively, will be driven drawings, thestraps nia-y be disposed' Y securing the same in such'diagonal orangular position, corresponding angular faced wedges 2OV are to heprovided. The lower edges orp hothcof the bars 12 and 15 are preferablyand correspondingly slotted or toothed, as at 2l, for allowing clearanceof the usual lugs vor projections of thepatterns (not shown) thereunder,when operatiyely positioned andV supportingthe pattern within the nioldbox or ask...

It is well understood that, while the subject-matter ofthe presentapplication has heen described and illustrated herein in specific termsand details of construction and arrangement, Various modifications ofthe rsance and changes in size, configuration and manner ofadjustment'and'use,'inay be resorted to without 'departing from 'thespirit of the'invention'fo'r from the scope of the claim appendedhereto. Y

Having thus fully described the invention, what is clai1ned,is:

A pattern supporting strap adapted for longitudinal adjustment, hookscarried by the end portions of vsguldstrap Jfor securing the saine toA amold box, and n'o'tches'formed'. Yon the lower edge of said strap andadapted to support the pattern within a. nioldbox.

In testimony that Inclairn therforegoing I have hereunto set my hand atMilwaukee,

in the county of Milwaukee and State of v Wisconsin. l

JOI-INY H. MAYVVORM.

